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GT Series X Rotary Files

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GT Series X Rotary Files

GT Series X Rotary Files

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4.6
4.6

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Evaluation

GT Series X rotary file design includes fewer cutting flutes and wider, more open blade angles that reduce core mass.

DENTSPLY Tulsa Dental Specialties recently introduced GT Series X rotary files, included in the GT Series X Endo System, which was designed by Dr. L. Stephen Buchanan. The GT Series X files are made with M-Wire nickel titanium, which according to the manufacturer increases resistance to cyclic fatigue, the leading cause of file separation1.

DENTSPLY Tulsa says that some of the other advantages of the GT Series X files include wider flutes to increase cutting efficiency and an open blade design to reduce the chance of threading.

Break Resistance

When the 7 dentists who participated in this evaluation were asked about the importance of break resistance when purchasing rotary files, all of them said it is very important. The evaluators were then asked to rate the GT Series X rotary files on break resistance. Four rated the files as excellent and 3 rated them as very good. One evaluator said, “The resistance to fracture appears to be better than the [files] I used previously.”

Flexibility

According to DENTSPLY Tulsa, the flexible strength of the GT Series X rotary files is the result of how they are built and the material with which they are made: M-Wire nickel titanium. In a study presented at the American Association for Dental Research 37th Annual Meeting, researchers concluded that the “supe rior mechanical properties of M-Wire arise from the twinned microstructure, which provides strengthening and increased deformation without fracture.”2 When the evaluators were asked to rate the GT Series X rotary files on their flexibility, 6 rated them as excellent and 1 rated them as very good. One evaluator commented that the files’ flexibility is excellent, “especially in comparison to [other files].”

Safely Following the Canal

The increased flexibility of the GT Series X rotary files allows them to follow curved canal paths with faster cutting while using fewer files, says the manufacturer. When the evaluators were asked about the importance of safely following the root canal when purchasing rotary files, 6 said this feature is very important and 1 said it is important.

The evaluators were then asked to rate the GT Series X files on their ability to safely follow the root canal. Six rated the files as excellent and 1 rated them as very good. One of the evaluators said of the GT Series X files, “Once a guide path is established, the GTX follows it very well.”

Cutting Efficiency

According to DENTSPLY Tulsa, the GT Series X rotary files have been designed with wider flutes, reducing the number of continuous rotations around the instrument from the tip to the end of the cutting zone. These wider flutes create a deeper chip space, thus increasing cutting efficiency.

When the evaluators were asked to rate the GT Series X rotary files on cutting efficiency, 5 rated them as excellent, 1 rated them as very good, and 1 rated them as good. One of the evaluators simply described the cutting efficiency of these files as “great.”

Overall Satisfaction

When the evaluators were asked to compare the GT Series X rotary files with similar files from other manufacturers, 5 said they were much or somewhat better (2 evaluators said they weren’t sure). Six evaluators said they would definitely recommend the files to colleagues and 1 said probably. All 7 evaluators said they would definitely purchase the files in the future.

At the end of the evaluation, the evaluators were asked to give their overall satisfaction rating for the GT Series X rotary files. Three evaluators rated them as excellent and 4 rated them as very good. One evaluator said, “The GTX files are a huge improvement over other [files] I have tried.”

Reference

  • 1. Shen Y, Cheung GS, Bian Z, et al. Comparison of defects in ProFile and ProTaper systems after clinical use. J Endod. 2006;32:61-65.
  • 2. Brantley WA, Clark WAT, Kovarik L, et al. STEM observations of NiTi wires for rotary endodontic instruments. Paper presented at American Association for Dental Research 37th Annual Meeting; April 4, 2008; Dallas, TX. Abstract 0595.

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